got book for glitch xp level and level 81 is max cap. This book from one of Daedric Artifacts quest. So check out youtube.com about it so that how i follow youtube.com and i done get to 81. Thank god so save me pain from fights some high level enemies and even later on face to final boss!!
Edit: DO NOT LEVELS UP TO 81 FROM USING THIS BOOK I MENTION IS BECAUSE IT WILL MAKE GAME FREEZES. THAT WHAT I GOT NOW!!!
My game got freezes from auto saving or save slots more then 10 that i make thread about it yesterday so when i got less then 5 save slots and turn off auto saving until now and no problem. Then early in evening I completed Daedric Artifacts quests and and do glitch xp leveling up to 81 then got game freezes afterward.
I recommend just do it for level 50 achievement then reload previous saved game and play normal with levels up
Anyway I still hope hope Bethesda fixes this problem cos it is ruin the game but I only do it really for level 50 achievement.